eg：Whether she will come or not is unknown.(主语从句

It is unknown weather he will come or not.(主语从句

I don't know weather he will come or not.(宾语从句

The question is weather he will come or not.(表语从句

The question weather he will come or not is not settled.(同位语从句

例：09年6月真题 __________(很多人没有意识到的

例：08年12月真题

It was very dark, but Mary seemed to (本能地知道该走哪条路

know which way to take by instinct 宾语从句

例：07年12月真题

In my sixties, one change I notice is that _________________ (我比以前更容易累了

例：真题08年12月

Your resume should attract a would-be boss's attention by demonstrating _____ (为什么你是某个特定职位的最佳人选). 宾语从句

例： Since my childhood I have found that ________ (没有什么比读书对我更有吸引力